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Heart|Lab Grown|IGI

0.99ct E SI2 Heart Lab Grown Diamond

ID • E/SI2 • IGI LG840611743

Shape and cutting style on the report: Heart brilliant

Certificate IGI LG840611743

Diamond specifications and retailer prices

From $148 USD
As of October 23, 2026
Save $709 USD (83%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $857 USD at MOH London · As of October 26, 2026
View at MOH London

About this 0.99ct lab-grown heart diamond

This 0.99ct lab-grown heart sits in the just-under-one-carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG840611743 or 840611743. Listed at 11 retailers as of October 23, 2026, with prices from $148 to $857, a $709 spread on the same certified stone. MOH London lists it at $857. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

0.99
Carat
E
Color
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle34.9°
Pavilion angle42.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG840611743
Dimensions6.98 × 6.53 × 3.86 mm
L/W Ratio1.07
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.98 mm6.53 mm0.99 ctE / SI2
OriginLab Grown
CutIdeal
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG840611743
Side View
Table 64.0%Crown 34.9°Girdle: MED-STKPavilion 42.8°Culet: NoneDepth 55.3%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 23
Current: $857 USD|Low: $165 USD|High: $857 USD|Avg: $308 USD
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 27, 2026
Retailer 9$165 USD
Retailer 10$183 USD
Retailer 5$205 USD
Retailer 2$245 USD
Retailer 8$294 USD
Retailer 4$313 USD
Retailer 7$337 USD
Retailer 3$393 USD
Retailer 6$621 USD
MOH London$857 USD

20 data points across 10 retailers

11 retailers$148 USD to $857 USD

A
Cheapest Retailer
-
$148 USD
A
Retailer 2
-
$165 USD
View
Final sale: no returns
A
Retailer 3
-
$183 USD
View
A
Retailer 4
-
$205 USD
HK$1,600 HKD
View
A
Retailer 5
-
$245 USD
£193 GBP
View
B+
Retailer 6
-
$294 USD
View
B+
Retailer 7
-
$313 USD
€298 EUR
View
B+
Retailer 8
-
$337 USD
View
B
Retailer 9
-
$393 USD
£310 GBP
View
B
Retailer 10
-
$621 USD
View
Most Expensive
B
MOH London
LG840611743 · Oct 26
$857 USD
£675 GBP
View
10 more retailers have this diamond
Prices start from $148 USDSave up to $709 USD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
0.99ct Heart
$148 USD